CVE-2022-30781: Code.gitea.io/gitea Shell Command Injection Vulnerability

HIGH
Advisory Identifier: GHSA-p5f9-c9j9-g8qx
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CVSS 7.5
CWE-116
Published
Advisory Summary

CVE-2022-30781 is a HIGH (CVSS 7.5) shell command injection vulnerability (CWE-116: Improper Encoding or Escaping of Output) affecting Code.gitea.io/gitea libraries in the Go ecosystem. The issue involves shell command injection in gitea. Remediation is available by upgrading affected packages to version 1.16.7.

CVE-2022-30781 at a Glance

CVE Identifier CVE-2022-30781
GHSA Identifier GHSA-p5f9-c9j9-g8qx
Severity HIGH
CVSS v3.1 Base Score 7.5
CWE Classification CWE-116: Improper Encoding or Escaping of Output
Affected Product Code.gitea.io/gitea
Package Ecosystem Go
Published Date
Last Updated

Security Impact

CVSS: 7.5

The security impact metrics below are parsed directly from the CVSS v3.1 vector string (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N).

Attack Vector Network (AV:N)
Attack Complexity Low (AC:L)
Privileges Required None (PR:N)
User Interaction None (UI:N)
Scope Unchanged (S:U)
Confidentiality None (C:N)
Integrity High (I:H)
Availability None (A:N)

How to Fix CVE-2022-30781

To remediate this vulnerability, upgrade all affected Code.gitea.io/gitea dependencies to a patched release. Both direct and transitive dependencies should be checked, as frameworks or security libraries may pull in vulnerable versions transitively.

code.gitea.io/gitea fixed: 1.16.7 
Upgrade code.gitea.io/gitea to 1.16.7
Verify Direct and Transitive Dependencies

Run the following command in your project directory to verify that all resolved dependencies use the patched release: 

inspect dependencies for code.gitea.io/gitea

How to Check if You Are Affected

To determine whether your application is affected by CVE-2022-30781, inspect your project dependencies for Code.gitea.io/gitea:

inspect dependencies for code.gitea.io/gitea

Analyze the terminal output to locate any version of Code.gitea.io/gitea in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 1.16.7), your application is affected.

Note: Verify declared build manifests and deployed runtime container environments.

Technical Details

Vulnerability Mechanism & Technical Analysis

This vulnerability is classified under CWE-116: Improper Encoding or Escaping of Output, where the product prepares a structured message for communication with another component, but encoding or escaping of the data is either missing or done incorrectly. as a result, the intended structure of the message is not preserved. In Code.gitea.io/gitea, software state validation or input boundaries are circumvented during processing. Review the official source advisory statement below for specific affected components, classes, and reproduction details.

Source Advisory Statement

Gitea before 1.16.7 does not escape the shell out for `git fetch remote` allowing for shell command injection

CVE-2022-30781 Affected Code.gitea.io/gitea Versions

1 component(s)
Fixed Versions:
1.16.7
Product / Package Ecosystem Affected Versions Fixed Version
code.gitea.io/gitea
golang/code.gitea.io/gitea
Go
< 1.16.7
1.16.7

References

NVD — CVE-2022-30781 NVD
https://nvd.nist.gov/vuln/detail/CVE-2022-30781
Code.gitea.io/gitea Source Repository REPOSITORY
https://github.com/go-gitea/gitea/pull/19487
Code.gitea.io/gitea Source Repository REPOSITORY
https://github.com/go-gitea/gitea/pull/19490
blog.gitea.io/2022/05/gitea-1.16.... WEB
https://blog.gitea.io/2022/05/gitea-1.16.7-is-released
Code.gitea.io/gitea Source Repository REPOSITORY
https://github.com/go-gitea/gitea
Code.gitea.io/gitea Security Information SECURITY
http://packetstormsecurity.com/files/168400/Gitea-1.16.6-Remote-Code-Execution.html
Code.gitea.io/gitea Security Information SECURITY
http://packetstormsecurity.com/files/169928/Gitea-Git-Fetch-Remote-Code-Execution.html

Frequently Asked Questions

What is CVE-2022-30781?
CVE-2022-30781 is a security vulnerability in Code.gitea.io/gitea involving Shell command injection in gitea under CWE-116: Improper Encoding or Escaping of Output.
Which Code.gitea.io/gitea versions are affected?
Affected versions include releases prior to 1.16.7 across affected packages: code.gitea.io/gitea.
What version fixes CVE-2022-30781?
Upgrading to 1.16.7 (or the latest patched release for your respective branch) resolves the vulnerability.
Is code.gitea.io/gitea affected?
Yes, code.gitea.io/gitea is affected in releases prior to 1.16.7. Upgrade your dependency to 1.16.7 or later.
What is the CVSS score of CVE-2022-30781?
CVE-2022-30781 has a CVSS v3.1 base score of 7.5 (HIGH) with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N.
What CWE is associated with CVE-2022-30781?
CVE-2022-30781 is classified under CWE-116: Improper Encoding or Escaping of Output (The product prepares a structured message for communication with another component, but encoding or escaping of the data is either missing or done incorrectly. As a result, the intended structure of the message is not preserved.).
How can I check Go dependencies for CVE-2022-30781?
Run the dependency tree command: 'inspect dependencies for code.gitea.io/gitea'. This command lists direct and transitive dependencies in your build configuration so you can verify if a vulnerable version is resolved.
Machine-readable OSV JSON OSV v1.5 Schema
Normalized schema output
View Raw JSON 
{
  "schema_version" : "1.4.0",
  "id" : "GHSA-p5f9-c9j9-g8qx",
  "modified" : "2022-05-25T20:14:36Z",
  "published" : "2022-05-17T00:01:46Z",
  "aliases" : [ "CVE-2022-30781" ],
  "summary" : "Shell command injection in gitea",
  "details" : "Gitea before 1.16.7 does not escape the shell out for `git fetch remote` allowing for shell command injection",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "Go",
      "name" : "code.gitea.io/gitea"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "1.16.7"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2022-30781"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/go-gitea/gitea/pull/19487"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/go-gitea/gitea/pull/19490"
  }, {
    "type" : "WEB",
    "url" : "https://blog.gitea.io/2022/05/gitea-1.16.7-is-released"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/go-gitea/gitea"
  }, {
    "type" : "WEB",
    "url" : "http://packetstormsecurity.com/files/168400/Gitea-1.16.6-Remote-Code-Execution.html"
  }, {
    "type" : "WEB",
    "url" : "http://packetstormsecurity.com/files/169928/Gitea-Git-Fetch-Remote-Code-Execution.html"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-116" ],
    "severity" : "HIGH",
    "github_reviewed" : true,
    "github_reviewed_at" : "2022-05-25T20:14:36Z",
    "nvd_published_at" : "2022-05-16T04:15:00Z"
  }
}